If you are an Iphone user, you probably are aware of the notorious battery problem. For most of us, just average daily use, you'll be shocked if your phone makes it throughout the day without dying.
This is the best invention since......the iPhone. Okay, maybe that's an overstatement. But, this really is indeed a lifesaver. I call mine "Second Chance" because at 0% battery life (when the battery is practically dead), when you put the case on, at full battery charge of the case, it can charge your iPhone back to 100% or nearly that much. Speaking of which, my phone just died an hour ago and now it's up at 95%. AND IT'S STILL CHARGING!! It charges your iPhone just as fast as you normally plugging it into an outlet.
This is great for people who find charging the iPhone constantly to be a headache/hassle, or they simply don't have time to charge their cell phone while they're on the go.
The case is sturdy and glossy. Two comments. First, is that it makes the phone noticeably heavy but that doesn't bother me. The case isn't bulk, it just weighs a decent amount because it has a battery attached to it (duh). The only complaint I have is that the front guard of the phone seems to be lacking, such as which, if the iPhone were to fall flat on its face with the battery back, your screen would probably be doomed and heavily damaged. So be very careful when touting it around.
Other than that, it's perfect.